表征板材特性的无芯片射频识别传感器设计
Design of Chipless Radio Frequency Identification Sensor Characterizing Plate Characteristics
赵欣 1马润波1
作者信息
- 1. 山西大学 物理电子工程学院,山西 太原 030006
- 折叠
摘要
为使用无线方式确定平板材料的介电常数和厚度,本文建模并分析了一种无芯片射频识别(Radio Frequen-cy Identification,RFID)传感器.传感器包括刻蚀在接地板上的两个互补开口环谐振器,以及由传输线连接的两个单极子天线.对传感区域微带线耦合互补开口环谐振器模型进行了建模分析,研究了两个谐振器的谐振频率随被测材料特性变化的规律.通过仿真和数据分析,当被测材料厚度在2.5 mm～4.0 mm范围内时,确定了两个天线间传输零点与被测材料相对介电常数和厚度之间的线性表征关系.分析结果表明,理论上可以通过传感器的雷达散射截面(Radar Cross Section,RCS)传输零点实现被测材料相对介电常数和厚度的表征,相对介电常数相对误差在5％以内,厚度相对误差在10％以内.
Abstract
In order to determine the dielectric constant and thickness of the plate material wirelessly,in this paper,we modeled and analyzed a chipless radio frequency identification sensor.The sensor included two complementary split ring resonators etched on the ground plane and two monopole antennas connected by transmission lines.The microstrip line coupled complementary split ring res-onator model in the sensing area was modeled and analyzed,and the variation of the resonant frequency of the two resonators with the characteristics of the measured material was studied.Through simulation and data analysis,when the thickness of the measured material was in the range of 2.5 mm to 4.0 mm,the linear characterizing relationship between the transmission zero of the two anten-nas and the relative dielectric constant and thickness of the measured material was determined.The analysis results show that the rela-tive dielectric constant and thickness of the measured material can be characterized theoretically by the radar cross section transmission zero of sensor.The relative error of the relative dielectric constant is within 5％,and the relative error of the thickness is within 10％.
关键词
无芯片RFID传感器/互补开口环谐振器/极化变换/介电常数Key words
chipless RFID sensor/complementary split-ring resonator/polarization transformation/dielectric constant引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据